B triangle ABC AB = BC, BM median, angle ABC = 110deg. Find angle ABM.
| June 1, 2021 | education
Since, by condition, AB = BC, the triangle ABC is isosceles.
From vertex B we draw the median BM, which in an isosceles triangle will also be the height and bisector, since the triangles ABM and CBM are equal.
Then the angle ABM = ABC / 2 = 110/2 = 55.
Answer: Angle ABM is 55.
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